	<!-- 头部开始 -->
	<div class="head">
		<div class="content">
			<div class="tit left">线上笔试答题系统</div>
			<div class="btns">
				<ul>
					<li class="exit J_exit"><a href="../javascript:void(0)">退 出</a></li>
					<li class="usercenter J_users"><a href="../javascript:void(0)">用户定制中心</a></li>
				</ul>
			</div>
		</div>
	</div>
<!-- 头部结束 -->
